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Are You in Need of Vitamin D? Everything to Know and More!
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Special Thanks to my team and Nicholas Norwitz – Oxford Ketone PhD Researcher and Harvard Med Student – for working diligently on research as well!
The first thing I just have to address, you probably know basically what vitamin D is, but we’ll touch on it for like 30 seconds. Vitamin D is just a hormone that’s created in the skin. Okay? It comes from sunlight and it gets converted into an active form, and then does all kinds of things within the body. We’ve been led to believe that it only has to do with bone health, but it does a heck of a lot more because vitamin D is actually a hormone that has very powerful processes within the body.
In fact, the study that was published in 2011 in Nutrition Research found that 42% of Americans are deficient in vitamin D, and then another study in 2009 from JAMA found that 77% of Americans at least have insufficient amounts of vitamin D. Now again, this is without even looking at the big picture of all this other stuff that it does, so we’re going to go ahead and go line by line with what I think are the most unusual things that vitamin D does within your body.
Forrest K. et al. Nutrition Research 2011 (
Okay? Number one, telomere length. First and foremost, telomeres are simply this. When your cells age, your telomeres shorten. I want you to think of it like a shoelace that has a little plastic cap on it, and if that plastic cap wears shorter and shorter and shorter, eventually you end up having a frayed shoelace. Well, this happens at the cellular level and the telomeres are like the shoe lace caps, right? The shoelace caps wear with age. Now, what’s interesting is vitamin D actually restores telomere length.
The American Journal of Clinical Nutrition published a study and found that in an analysis of 2160 women, found that higher levels of vitamin D were associated with longer telomeres in leukocytes (white blood cells). To quote from the paper, “The difference in leukocyte telomere length between the highest and lowest tertiles of vitamin D was 107 base pairs (P = 0.0009), which is equivalent to 5.0 y of telomeric aging.”
Richards J. et al. American Journal of Clinical Nutrition 2007 (
All right. Now let’s go ahead and let’s move into number two, which is a huge one and I don’t know anyone that isn’t concerned with this. Your weight. Vitamin D has a huge impact on your weight. There was a study that was published in Diabetes Journal in 2016 and it found that vitamin D receptor levels are high in the paraventricular nucleus (PVN) and arcuate nucleus (AN) of the hypothalamus. By acting on the PVN and AN, respectively, vitamin D can improve glucose tolerance and reduce appetite. The abstract also reads, “chronic central administration of 1,25D3 [0.26 micrograms per day for 28 days] dramatically decreased body weight by lowering food intake in obese rodents [n=7].”
Sisley S. et al. Diabetes 2016 (
Next one we’ve got to talk about is insulin sensitivity. In my opinion, being someone that has researched the world of low carb diets for so many years, insulin sensitivity and insulin resistance are the two things that probably affect your weight and your overall health the most. Okay. There were some studies that took a look at how vitamin D affected our actual insulin sensitivity, and this is where your mind’s about to get blown.
This study was published in the Journal of Clinical Diabetes also in 2016, took a look at 152 patients between the ages of 20 – 40 who were obese, had tried and failed conventional weight loss programs, and who were deficiency in vitamin D and put them on a program that included diet, exercise, and 100000IU vitamin D once every two weeks (this equates to 7000IU daily and is okay because vitamin D is fat soluble as so is stored in the body). The group treated with vitamin D also lost four times as much body weight as the control group
Hanafy A. et al. Clinical Diabetes 2018 (
Nicholas Norwitz – Oxford Ketone PhD Researcher and Harvard Med Student:
